Retractor and sprinkler for fiber-press dies



G. J. MANSON.

RETRACTOR AND SPRINKLER FOR H BER PRESS DIES. APPLICATION FILED MAY 3, 1919.

. 1 3,179. Patented A r. 1 1922.

3 SHEETS-SHEET Er s e. L MANSON'. RETRACTOR AND SPRINKLER FOR FIBER PRESS DIES.

APPLICATlQN FILED MAY 3,19l9. .1 ,413,179, Patented Apr. 18, 1922.

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GEORGE JAMES MANSON, or TORONTO, ONTARIO, CANADA.

RETMCTOR AND SPRINKLER FOR FIBER-PRESS DIES.

Specification of Letters Patent. Pate t d A 18 1922 7 Application filed May 3, 1919. Serial No.

(GRANTED UNDER THE PROFISIONS O]?v THE ACT OFMAROH 3, 1921, 41 STAT. L, 1313.)

To all whom it may concern:

Be it known that I, GEORGE JAMES MA soN, a subjectof the King of Great Britain, and resident of the city ofToronto, in Province of Ontario, Dominion of Canada, have invented certain new and useful Improvements in Retractors' and Sprinklers for Fiber-Press Dies, of which the following is a specification. v

This invention relates to improvements in retractor and sprinkler for fiber press dies, and the objects of the invention are to provide a'simple and eifective means for retracting a pressed fiber sheet or article from between the pressing dies and for sprinkling the surface of the dies. I 7

Further objects are to generally improve and simplify the construction of the device to better adapt it to perform the functions required of it, and it consists essentially of the improved construction hereinafter described in detail in the accompanying specification and drawings.

The drawings show a set of dies and apparatus for carrying out the sprinkling op eration.

In the drawings:

Figure 1 is a sectional elevation of a fiber press. p

Figure 2 is a sectional plan.

Figure 3 is a cross sectional elevation.

Figure 4 is a sectional detail of the water feeding means.

Figure 5 is a sectional detail of the re Figure 7 is asectional detail of the dies able supply pipe23'. Thepipe 20 is sup- In the drawings like characters reference indicate corresponding parts man the figures.

Referring to the drawings, A represents a fiber press having an upper die B, a'lower-- operating track controlling the sprinkling receiving rollers 28.

:1 ;Means :are provided for die C, and a side or wall die D which are operated by suitable hydraulic means to press a sheet of fiber in the manner well known in the art. In the embodiment illustrated the lower die C is connected to and actuated by hydraulic cylinders 10 which actuate plungers 11 connected to a platform 12 supporting the die. The upper die B is connected to a platform 13 fixedly mounted on the side posts 14:, the lower extremities 'of which are connected by a cross bar 15 to the cylinders 10. The side or wall die D is sheet orother article may be fed into the conduit 18 which opens into a port 19 in the wall die, the retraction of the wall die over the die B cutting off the port and supply of fiber at the proper point. It will be understood, however, as far as the present invention is concerned the dies and method of the same will be of any suitable character. 1

E represents a sprinkling device reciprocable between the dies B and C when they are separated. The form of sprinklingdevice =Ihave shown comprises a transversely extending pipe-2O perforated in rows along 'thetop and bottom whereby when the water pressure is on, the surface of both the upper and lower dies will be sprinkled. This pipe is supplied with water with a suitable flexi-v ble connection including atelescopic supply pipe 21 extending through a gasket 22 in the end of the pipe 20 connected to a suitported from a reciprocable retractor carriage F having wheels 24: which run in a such as the driving pinion 26 engaging the rack 27 connected to the carriage, the rack additional support from suitable stripping the pressed sheet from the retractor carriage beneath it when outside the die whereby it may be transferred to a suitable conveyor. These means comprise a pivoted stripping member 31 pivotally mounted on the cross shaft 32 and adapted to assume the inclined position shown in Figure 5 as the carriage F passes whereby on the return motion of the carriage it will strip the sheet of pulp 33 therefrom and permit it to drop onto the conveyor Gr.

The operation of the sprinkling device is controlled in such a way as to cause it to operate only when it is moving on the return direction across the face of the dies. It is not desirable that the sprinkling should take place on the forward motion, since while the sprinkler is moving in this direction the pressed sheet will be held against the surface of the die. The controlling means which I have shown comprise a valve 35 of any suitable type having'a stem 36 normally spring held in open position by means of a spring 37 extending between the collar 38 on the stem 36 and the top of the valve casing 39. The stem 36 carries aroller 40 at the top controlled by a cam track 41. This cam track 41 includes a lower track 42 having a central aperture through which 7 the stem 36 may pass, but through which the roller 40 may not pass, and an upper track 43 which projects beyond the upper track and is formed at one portion with an inclined section 44 which brings it into alignment with the lower track.

On the inward movement the roller 40 runs on the lower track 42; when it reaches the end of this track the spring 37 causes the valve stem to move outwardly,'openin'g the valve and causing the sprinkler to operate on the return movement. While the sprinkler is operating the roller 40 runs on the track 43, passes down the inclined portion 44 to the lower portion 45 of the track 43. On the return movement the roller is prevented from passing up the inclined portion 44 by means of a spring trap member spring 46 hinged to the end of the track 42 and held in alignment therewith as shown in Figure 8, whereby when the trap member is in position there will be no passage from the section 45 of the track 43 to the main portion thereof, the trap, however, being free to swing downwardly to permit of movement from the upper track to the lower track.

The operation of the press takes place in the usual way, the pulp stock being fed between the dies and the pressure being exerted by hydraulic means, while the water is withdrawn character and including a suitable number of groovesand perforated plates of a charthrough the foraminous surface of the dies, this surface being of any usual able the water to be strained, leaving the sheet to drop onto the retractor carriage, and on withdrawal of the retractorcarriage the sprinkler operates as previously described to sprinkle the surface ofboth the upper and lower die, the sprinkling operation ceasing as soon as the roller passes down the inclined portion 44 to the lower portion '45 of the track 43. When the retractor carriage reaches its outermost position the article is stripped therefrom by means of the pivoted stripping member 31.

As many changes could be made in the above construction, and many apparently widely different embodiments of .myinvention, within the scope of the claims, constructed without departing from the spirit or scope thereof, it is intended that all mat ter contained in the'accompanying specification and drawings shall be interpreted as illustrative and not in a limiting sense.

What I claim as my invention is:

'1. In a fiberpress, the combination with the suction is then released to permit the the dies, of sprinkling means adapted to enter between the same.

2. A fiber press having means for sprinkling the die surface thereof.

3. In a fiber press andin combination, a pair of dies, sprinkling means adapted to. enter between the dies when apart, and means for supplying the sprinkling means with fluid while moving. i I

4. l he arrangement according to claim 3, in which sliding telescopic water-supply conduits are provided.

5. In a fiber press and in combination, a die, a sprinkler movable across the-faceof the die, and controlling means for the sprinkler adapted to cause it to operate only when moving in one direction across, the face of the die; i 1 1 6. In a fiber press and in combination a pair of dies, means for causing the pressed article to adhere to the surface of the upper die upon separation of the dies, a retractor adapted to enter between the dies and receivethe pressed article, and a sprinkler also adapted to enter between the dies with the retractor, and controlling means for the sprinkler adaptedto cause the same toseparate on the return movement only.

7. Thearrangement according to claimfi, in which the controlling means comprises a valve, a stem therefor and a cam track controlling the movementofthev stem.

8. In a fiber press, and in combination, a ping member adapted to strip the pressed 10 pair of dies, a retractor adapted to enter bearticle from the carriage as it reciprocates. tween the dies when apart, a pivoted strip- In witness whereof I have hereunto set my ping member adapted to strip the pressed hand in the presence of two witnesses.

5 article from the retractor. GEORGE JAMES M ANSON.

9. In a fiber press and in combination, a pair of dies, a retractor carriage adapted to Witnesses: reciprocate between the dies when apart, a RUSSEL S. SMART, track supporting the carriage, and astrip- P. GARRARD. 

